CFM vs. MPH: What Each One Actually Tells You
CFM (cubic feet per minute) measures the volume of air moved.
This is the number that predicts how well a blower handles heavy, wet, or large piles of debris.
The Toro PowerJet F700's 725 CFM is the highest in this category, and it shows most clearly on wet leaf piles that lighter blowers struggle to move.
MPH (miles per hour) measures how fast the air stream travels.
Higher MPH helps push light, dry debris further in a single pass but doesn't predict performance on heavy or matted debris the way CFM does.
Battery Voltage and Amp-Hours
Voltage (40V on Ryobi and Greenworks, 56V on EGO) reflects the battery system's design, not a direct performance guarantee on its own.
What matters more in practice is the combination of voltage, motor design, and battery amp-hour (Ah) rating.
Amp-hours directly determine runtime.
A 5.0Ah battery, like the one included with the EGO LB6504, holds meaningfully more charge than a 2.0Ah or 4.0Ah battery on the same platform, translating to longer runtime at the same power draw.
When comparing cordless blowers, look at the actual CFM rating and the actual runtime figure (usually listed in minutes), rather than assuming a higher voltage number alone means a better blower.
Corded vs. Cordless: The Real Cost Comparison
A corded blower like the Toro PowerJet F700 has no battery to buy, charge, or eventually replace.
Over several years, that avoids a real recurring cost, cordless tool batteries typically lose meaningful capacity after 3 to 5 years of regular use and need replacement.
A cordless blower trades that long-term cost for convenience: no cord to manage, no outlet dependency, and often a shared battery platform across other yard tools you may already own.
For a household already invested in a battery platform, cordless is usually the more convenient long-term choice.
For a first leaf blower purchase on a tight budget, corded delivers more raw performance per dollar upfront.
Noise Ratings
Decibel (dB) ratings aren't always prominently listed, but they matter for anyone with close neighbors or who does yard work early or late in the day.
Standard cordless blowers typically run in the 65 to 75 dB range during normal use.
Models built specifically around noise reduction, like the Ryobi 40V Whisper Series, run quieter at matched CFM output.
Gas blowers commonly exceed 75 to 90 dB, part of why many municipalities and HOAs now restrict gas blower hours specifically, while cordless electric models rarely face the same restrictions.
Weight and Ergonomics
Handheld blower weight in this category ranges from roughly 5 to over 6 lbs with a battery installed.
That range feels small on paper but adds up over a 30 to 60 minute session, especially for elevated or one-handed work like gutter cleaning.
A cruise control or trigger lock feature, like the one on the Ryobi Whisper Series, reduces the physical demand of a long session independent of the blower's actual weight.
Warranty Coverage
Warranty length varies more than most buyers expect in this category, from 1 year on typical budget cordless tools to 5 years on the EGO LB6504's tool warranty.
For a seasonal tool that may sit unused for months at a time, a longer warranty is a meaningful hedge against defects that don't surface immediately.
Spec Comparison Quick Reference
Check price on Amazon, Toro PowerJet F700
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Ryobi
Cruise control lock means you don't have to grip the trigger while balancing on a ladder
- 40V HP Brushless motor, 650 CFM / 160 MPH
- Cruise control trigger lock
- Whisper Series low-noise housing
- Compatible with universal round-nozzle gutter kits
✓ Pros
- Cruise control lock means you don't have to grip the trigger while balancing on a ladder
- 650 CFM easily clears dried leaves and grit from gutters with room to spare
- No cord to manage while climbing or holding a ladder position
- Lower noise reduces stra in during a task that already demands close attention
✕ Cons
- Bare tool listings mean a gutter kit and battery are both separate purchases
- Slightly front-heavy when extended overhead with a long gutter kit attached
EGO
Variable dial lets you back off power for controlled gutter work, then hit turbo for packed debris
- Up to 650 CFM turbo airflow
- 250 to 500 CFM variable-speed dial
- 56V ARC Lithium battery, 5.0Ah included
✓ Pros
- Variable dial lets you back off power for controlled gutter work, then hit turbo for packed debris
- 650 CFM clears compacted or long-neglected gutters other blowers struggle with
- Long 75-minute runtime covers a full-house gutter cleaning session
✕ Cons
- Heaviest of the cordless picks, noticeably more effort to hold overhead for extended periods
- More blower than most routine gutter maintenance actually requires
- Higher price than the lighter, cheaper alternatives here
Toro
Highest CFM here for genuinely packed or compacted gutter debris
- 725 CFM airflow, 140 MPH air speed
- 12-amp motor
- Lightweight corded housing
✓ Pros
- Highest CFM here for genuinely packed or compacted gutter debris
- Works well with a telescoping gutter extension kit used from the ground on single-story homes
- Lighter than the EGO since there's no battery pack
✕ Cons
- A trailing cord is a real hazard when combined with ladder use
- Not recommended for elevated, one-handed ladder work
- Best reserved for ground-level extension-kit use rather than climbing
FAQ
Common questions
What does CFM actually mean, in practical terms?
CFM stands for cubic feet per minute, the volume of air the blower moves. A blower rated at 650 CFM, like the EGO LB6504 or Ryobi Whisper Series, is moving significantly more air per minute than one rated at 340 CFM, like the Greenworks. Higher CFM matters most for heavy, wet, or large-volume debris.
Is a higher voltage battery always better?
Voltage (40V, 56V, and so on) affects potential power output, but actual performance also depends on motor design, battery amp-hour capacity, and how the manufacturer tunes the system. The EGO's 56V platform and Ryobi's 40V platform both reach 650 CFM despite the voltage difference, so compare CFM and runtime directly rather than voltage alone.
How much does battery amp-hours (Ah) affect runtime?
Directly and significantly. A 4.0Ah battery holds roughly double the capacity of a 2.0Ah battery on the same platform, translating to roughly double the runtime at the same power draw. The EGO LB6504's included 5.0Ah battery is a meaningful factor in its 75-minute runtime rating.
What decibel range should I look for if noise is a concern?
Standard cordless blowers typically run somew here in the 65 to 75 dB range at operator's ear during normal use, higher at turbo settings. Models specifically marketed around reduced noise, like the Ryobi 40V Whisper Series, are designed to run toward the lower end of that range or below it. Gas blowers commonly run 75 to 90-plus dB.
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